2500 Saskatchewan is part of a large ancient continent
1900 BCE
1900 Volcanoes in SK
1850 BCE
1850 Wathaman Batholith (an intrusion of magma under the surface)
1800 BCE
1800 Orogeny (mountain building) Trans-Hudson Orogen Earth changes from an anoxygenic environment to an oxygenic environment Martin Sandstone is deposited with Stromatolites (mounds created by blue green algae)
1700 BCE
1700 Erosion of the mountains
1300 BCE
1300 Uranium deposited
544 BCE
544 SK covered by the epicontinental Sauk Sea Hard shelled invertebrates including Trilobites
478 BCE
478 Meteorite hits SK, leaving behind the Carswell Meteorite Crater
470 BCE
470 Tyndall Stone deposited as massive limestone
390 BCE
390 Winnipegosis Reefs are deposited, later to become a trap for oil deposits
385 BCE
385 Potash is deposited in the shallow sea that covers SK
355 BCE
355 First amphibians
248 BCE
248 Mass extinction in the oceans, 90% of the species disappear
245 BCE
245 First dinosaurs
220 BCE
220 First mammals
213 BCE
213 SK is again covered by a shallow sea
100 BCE
100 Diamonds are brought to the surface of SK in volcanic pipes
75 BCE
75 Shallow sea begins to retreat
70 BCE
70 Swamps. rivers and lakes form the badlands. Lignite (brown coal) is formed from the plants deposited in swamps.